Fire hydrant



H. T. DUNN FIRE HYDRANT July 13, 1937.

la 0 m 1.5 0

INVENTOR.

Patented July 13,y 1937 ETE STTES ABT Application September 1 Claim.

This invention relates to re hydrants.

The object of the invention is the production of a fire hydrant, whichwhen frozen can easily have conduits formed through the ice therein, to

5 secure the immediate and eicient operation of the hydrant.

In the accompanying drawing, Fig. 1 repre sents a vertical cross sectionwith portions in full lines of an exemplication of the improved line 2 2and Figs. 3 and 4 indicate elevations of details.

'I'he hydrant is indicated to comprise the barrel casing having ahorizontal flange at its lower end which bears on the outer surface of aWater main I8, and is fastened thereto by bolts 28. The said flange hasan opening therethrough which forms a valve seat indicated at I4. Adrain outlet fitting I'I, is provided for the lower end of the casing. Ahead for the barrel casing I, is indicated at 2. Said head has openingstherethrough as shown, and is detachably fastened to the casing by boltsas indicated in Fig. 1. Pairs of horizontal slightly tapered outlets 30,extend from the barrel casing. I, near its top end.

An operating shaft is indicated with the upper cylindrical member 3,having the longitudinal threaded opening 4. The member 3 at its upperend is indicated having the head 23 which joins with a disc angeindicated in the drawing. A stuffing box 5 extends from the lower faceof the head 2, and through which the member 3 extends. A collar isfastened to the member 3 adjacent to the lower face of the stuffing box5. A valve stem is shown with its upper threaded portion 9 which is inthreaded engagement with the threaded opening 4. A square portion I forthe valve stem extends from the portion 9. Collars I3 and 25 areprovided to said square portion I0. The lower end of the square portionI0 joins with a threaded cylindrical portion as shown in Fig. 1. A valveI is supported on said threaded cylindrical portion by means of the nutI6. A web I2 having a square opening is shown in the barrel casing I.The said square portion I0 extends through the opening of the web I2. Asocket wrench 2| is provided for the head 23.

hydrant; Fig. 2 shows a section of Fig. 1 on the i 4, 1935, Serial No.39,102

A slightly tapered, spirally grooved, tubular vertical shaft 24, isindicated with the cap 1, at its upper end and from the latter extendsthe head 8. A screw plug 21 is provided for the lower end of the shaft24. Spiral groove 32 is indicated on the outer surface of the shaft 24.The said shaft 24, extends through the head 2, into the barrel casing I,and the cap l, is in threaded engagement with the head 2.

For the horizontal outlets 30 are indicated the short slightly taperedspirally grooved horizontal shafts 6, having the caps 'I with the headsS. The spiral grooves for the shafts 6 are shown at 32, Fig. 3.

Hose connections are indicated at 22 for the outlets 30.

The operation of the invention is as follows:

When the water 26, in the casing I, is frozen, the cap like l, of thespirally grooved vertical shaft 24, is unscrewed from the head 2. Thenthe head 8 of the cap l, is struck with a hammer and the like. By thismeans the spirally grooved shaft 24, can be lifted from frozen water orice 33, and there will be left a conduit for water, like 3|. nected tothe head 2, to coact with the water conduit produced or an auxiliary caplike 29, may be screwed to the head 2. Also the short slightly taperedspirally grooved horizontal shafts 6, may be removed from the frozenwater or ice 33, as described for the shaft 24, and hose connectionsconnected to the horizontal outlet 30, as indicated at 22.

It is to be understood that in addition to the hose connection for theconduit 3|, a similar hose connection may be connected to the head 2,for the parallel conduit made by the shaft 24, which in the drawing isshown in the ice of the casing. In fact hose connections may be appliedfor the two vertical outlet conduits that are produced, and four hoseconnections may be connected for the four horizontal outlet conduitslike 30.

Having described my invention I claim:

In a fire hydrant, an outlet cap having a spirally grooved taperingshaft connected thereto for the purpose set forth.

HUGH THOMAS DUNN.

A hose connection like 22, may then be con- Cil

